A nitrogen-13 nucleus is represented by the nuclide notation $^{13}_{7}\text{N}$. Fig. 11.1 illustrates a counter that records the radioactivity from a nitrogen-13 sample. The counter gives the count rate in counts per minute. Table 11.1 lists the count rate at 5 minute intervals.
(a(i))[1]
Determine how many protons are present in one nucleus of nitrogen-13.
(a(ii))[1]
Determine how many neutrons are in one nucleus of nitrogen-13.
(a(iii))[1]
Determine how many electrons are in one neutral atom of nitrogen-13.
(b)[2]
Calculate the half-life of nitrogen-13 using data from Table 11.1.
Worked solution & mark scheme
This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “7.” …